ci: Travis: removing linting,docs,doctesting
ci: Travis: removing linting,docs,doctesting

This is handled by GHA already, and not affected/required for coverage.

pytest-dev/pytest,nicoddemus/pytest,RonnyPfannschmidt/pytest,The-Compiler/pytest,markshao/pytest,nicoddemus/pytest,alfredodeza/pytest,Akasurde/pytest,The-Compiler/pytest